Dolsed Side Effects

Note: This document contains side effect information about hyoscyamine / methenamine / methylene blue / phenyl salicylate. Some of the dosage forms listed on this page may not apply to the brand name Dolsed.

Along with its needed effects, hyoscyamine / methenamine / methylene blue / phenyl salicylate may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking hyoscyamine / methenamine / methylene blue / phenyl salicylate:

Less common or rare

Blurred vision

eye pain

skin rash or hives

Symptoms of overdose

Blood in urine and/or stools

diarrhea

dizziness

drowsiness (severe)

fast heartbeat

flushing or redness of face

headache (severe or continuing)

lower back pain

pain or burning while urinating

ringing or buzzing in the ears

shortness of breath or troubled breathing

sweating

unusual tiredness or weakness

Some side effects of hyoscyamine / methenamine / methylene blue / phenyl salicylate may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common

Difficult urination (more common with large doses taken over a prolonged period of time)

dryness of mouth, nose, or throat

nausea or vomiting

stomach upset or pain (more common with large doses taken over a prolonged period of time)

This medicine may cause your urine and/or stools to turn blue or blue-green. This is to be expected while you are taking this medicine.

Some side effects of Dolsed may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Consumer resources

Professional resources

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